Method and means for tying springs



April 19, 1932. c. DIETRICH ,8

METHOD AND MEANS FOR TYING SPRINGS Filed May 23, 1931 6 0v C W? W 2 47Patented Apr. 19, 1932 CHARLESDIETRICH, OF CLEVELAND, OHIO METHOD ANDMEANS FOR TYING SPRINGS Application filed May 23, 1931. Serial No.539,584.

This invention relates to methodsv and means for fastening togetherspiral or coiled springs that are adapted for use in the manufacture ofbed and chair bottoms and the like. Heretofore, the practice, so far asI am aware,'in the manufacture of chair and bed bottoms utilizing coiledsprings, has been to tie the coils together by clips that are fastenedonto adjacent coils or by a tie rod that is wound around the coils andis adapted to extend between the rows thereof. The chief objection tosuch arrangement is that it has been necessary to assemble the springsat the factory, for the clips and also the weaving feature could beaccomplished satisfactorily only by machines. Thus, in mattress work, anassembled spring requires objectionable space, for transportation andstorage purposes. Furthermore, the use of especially h designedmachinery to tie springs together has generally been regarded asnecessary in this art, particularly where clips are used in order tolock one spring against pivotal movement with reference to the clip, asit has been 2:. found that such expedient minimizes the sagging effectwhen the spring is used.

An object of the present invention therefore is to provide a method ofand means for assembling a spring that will enable the unit '3n to beassembled without the necessity for special assembly machinery. Thus,the coil and tie rods may be shipped separately and then fabricated bythe mattress manufacturer, or other furniture manufacturer, in

accordance with the sales demand for his own,

particular product. In this connection, my invention contemplates a tierod, which may be rigidly locked to one coil and hinged to an adjacentcoil, wherefore the sagging effect incident to the use of the spring isminimized. Referring now to the drawings, Fig. 1 is a plan view of anassembled spring embodying my invention; Fig. 2 is a plan view of thetie rod apart from the spring; Fig. 3 is a 4: perspective view of anhour glass type of coil, with which my invention may be used; Fig. 4 isa section taken on theline 4- 1 in Fig. 1; Fig. 5 is an enlarged viewillustrating the connection between the tie rod and a pair 5 of adjacentcoils; Fig. 6 is a perspective view showing the relative position of thetie rods and 0011s before the rod is clamped to the coils; Fi 7 isasection taken on the line 77 in Fig. 5, and Fig. 8 is a section takenon the line 8-8 in Fig. 6. $5

.I have shown my invention in connection with a coil 10, which has a topturn 11 and a bottom turn 12. The top turns are adapted to be connectedtogether by tie rods 13 that extend in rows between the coils, while thebottom turns are adapted to be connected together by similar rods and inthe same manner. The tie rod which I utilize has offset portions 14 thatextend laterally and downwardly on one side of the rod, and an offsetportion 15 that extends laterally and downwardly from the other side ofthe rod. Briefly, the offset portion 15 is intermediate the offsetportions 14, as is shown in Figs. 2 and 6. Such offset portions arearranged in groups that are spaced apart in accordance with the centerto center spacing of the coils with which they are to be used.Furthermore, the rods as formed have the downwardly extending portionslying in substan- 7U tially parallel planes as is' shown in Figs. 6 and8, wherefore at the time of assembly, they may be readily placed overthe adjacent coils and thereby serve to position them prop erly withreference to each other. To clamp the tie rod to the coils, the loops onthe parts 14 and 15, are clamped underneath by asuitably formed pair ofpliers sothat the turns of the adjacent coils are in contiguousengagement, as is shown in Figs. 5 and 7 At such time, the loop of thepart 15 will be in close fitting contact with both coils, while theloops of the part 14 will be in close fitting contact with only onecoil. Inasmuch as'such last named coil is engaged at a plu-' rality ofspaced points on the curve of a circle, it is locked against hingingmovement with reference to the tie rod, while the other coil may behinged about the rod, as it is held primarily only by the loop of thepart 15.

The principal objection, which has heretofore been noted in springs,which are not locked with reference to the movement of the tie rods, hasbeen that they have a tendency to sag and therefore lessen desirabilityof the rin for mattress p u oses. My invention, y locking some the coilsa ainst movement with reference to some of t e tie rods and yet allowingothers to be hin ed with reference thereto, makes a firm unit t at stillhas suflicient flexibility for comfort and I that is free fromobjectionable noises during use. An important advantage of my inventiontherefore, is the fact that a spring'may be readily assembled at theplace of use and in any desired size by the manufacturer, without thenecessity for a large investment in special spring tying machinery.

I claim:

1. In combination, two coil s ring sections arranged side by side, a tierod aving spaced portions looped around" one coil sectlon to lock saidtie rod and section against relative movement and having another portionloopedaround the other section to provide a hinge connection betweensaid section and the tie rod, said looped portions holding the springsections in contiguous relationship 2. In combination two coil springsections arranged side by side, a tie rod having spaced I portions loopearound one coil section to lock said tie rod and section againstrelative movement and having another portion looped around the othersection to provide a hinge connection between said section and the tierod, the second mentioned looped portion overlapping both sections andholding go spring sections in contiguous relation- 1p. In testimonywhereof, I hereunto aflix my signature. 1

CHARLES DIETRI'CH.

